Unknowns
n. 未知事件（unknown的复数）
🗣️ 情景例句
Too bad we can't bottle the sound.
不能将声音装瓶真是太可惜了。
Please be aware that this is a crucial issue to us.
请了解这一点对我们至关重要。
The first thing I saw when I entered the art gallery was a notice which said:
走进展厅首先看到的是一张告示，上面写着